Question: Name the river with maximim Strahler number?
Paraphrase: Title the stream with maximim Strahler number?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q4022 . ?ent wdt:P1548 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Tinne, Saua, Farelva, Loire, Paatsjoki